It's as if they tried to do with the bearing edge what Evans did with the 360 Head
Effectively yes, but for different reasons. The truth is, unless we're talking ultra low tensions, and/or very thick heads, the head will follow the bearing edge profile to a greater extent. An exception to that being a sharp peak transition to a acute flat outer cut. Think in terms of a sharp double 45 or 60 degree. We've used a half roundover for as long as I can remember. The reasoning behind that is straightforward, it drives more vibration into the shell, & on solid shells especially, that makes an appreciable difference. Additionally, we augment the crest/peak radius according to the head sustain & other characteristics we're seeking to generate. That radius can be so large it equates to a small flat in some cases, or can be almost knife sharp in others.
As for Mapex, I have no issue with this thread other than a desire for Kevin to get more into replies & details, but in fairness to Kevin, I suspect that's not his professional remit. I've made an observation on Mapex's intention to file a patent on the bearing edge design. Personally, I think that's crazy, & being used to give the impression the edge is something they've conceived, & that adds to their "innovative" credentials. I get all that, & there's many who will believe it, but ultimately, you can't patent something that's already out there in the market, even if you developed it yourself. How that pans out will not be a subject aired on this forum.
All this said, the claims that Mapex are making about the benefits/characteristics of the edge they've
chosen are all completely true. They've decided to market it, & attach a trademark (that also covers other features). That's fine, & they should stick with that. Outside of this, manufacturers should be encouraged to engage with this forum, & I welcome Kevin's presence.